Calc.: Gram Formula Mass (NH4)2SO3 LIST SUBSCRIPTS N 2 H 8 S 1 O 3 LIST ELEMENTS HERE

Calc.: Gram Formula Mass LIST SUBSCRIPTS MULTIPLY By atomic mass INSERT ATOMIC MASS FROM PERIODIC TABLE N 2 X 14.01 g = H 8 1.01 g = S 1 32.06 g = O 3 16.00 g = LIST ELEMENTS HERE

Calc.: Gram Formula Mass LIST SUBSCRIPTS MULTIPLY By atomic mass INSERT ATOMIC MASS FROM PERIODIC TABLE N 2 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g LIST ELEMENTS HERE 116.14 g Add SUBTOTALS

Calculation Of Percent Composition (Mass) (NH4)2SO3 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g %N= 28.02 g 116.14 g x100 %N= 0.2413 x 100 116.14 g %Mass= Mass of part Mass of whole x100 %N= 24.13 %

Calculation Of Percent Composition (Mass) (NH4)2SO3 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g %H = 8.08 g 116.14 g x100 %H = 6.06 g 114.14 x100 %H = 0.0696 x 100 116.14 g %H = 6.96% %Mass= Mass of part Mass of whole x100

Calculation Of Percent Composition (Mass) (NH4)2SO3 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g %S = 32.06 g 116.14 g x100 %S = 0.2761x 100 116.14 g %S = 27.61% %Mass= Mass of part Mass of whole x100

Calculation Of Percent Composition (Mass) (NH4)2SO3 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g %O = 48.00 g 116.14 g x100 %O = 0.4133 x 100 116.14 g %O = 41.33% %Mass= Mass of part Mass of whole x100

Calculation Of Percent Composition (Mass) (NH4)2SO3 X 14.01 g = 28.02 g H 8 1.01 g = 8.08 g S 1 32.06 g = 32.06 g O 3 16.00 g = 48.00 g %N= 24.13% %H = 6.96% %S = 27.61% 116.14 g %O= 48.00 g 116.14 g x100 %O= 100 - (%N + %H + %S) %O=100-( + + ) %O= 41.33% OR 24.13 6.96 27.61 %O= 41.33%